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EP0026355B1 - Circuit arrangement for multiple-pole fault-current protection switches - Google Patents

Circuit arrangement for multiple-pole fault-current protection switches Download PDF

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Publication number
EP0026355B1
EP0026355B1 EP80105299A EP80105299A EP0026355B1 EP 0026355 B1 EP0026355 B1 EP 0026355B1 EP 80105299 A EP80105299 A EP 80105299A EP 80105299 A EP80105299 A EP 80105299A EP 0026355 B1 EP0026355 B1 EP 0026355B1
Authority
EP
European Patent Office
Prior art keywords
circuit
conductors
circuit arrangement
rectifier
junction points
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80105299A
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German (de)
French (fr)
Other versions
EP0026355A1 (en
Inventor
Rudolf Dipl.-Ing. Westermayer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6081421&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0026355(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT80105299T priority Critical patent/ATE7987T1/en
Publication of EP0026355A1 publication Critical patent/EP0026355A1/en
Application granted granted Critical
Publication of EP0026355B1 publication Critical patent/EP0026355B1/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/06—Arrangements for supplying operative power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/06—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode

Definitions

  • the invention relates to a circuit arrangement for multi-pole residual current circuit breakers according to the first part of claim 1.
  • a known circuit arrangement of this type works with two rectifier sections for each network conductor, so that a total of three outer conductors - formerly referred to as phase conductors - and one neutral conductor - formerly referred to as center conductors - require eight rectifier sections (DE-B2-2653 453).
  • the rectifier sections are arranged in a bridge circuit and the auxiliary voltage can be tapped at their connection points.
  • An earth leak detection device is also known (DE-A1-28 25 881), according to which, according to exemplary embodiments, an auxiliary earth is additionally coupled into a bridge arrangement of rectifier paths.
  • This auxiliary earth takes over the function of the second operating pole in the event of a neutral conductor break, if a potential other than zero is present across the load in single-phase operation at the second operating pole.
  • the known multi-pole circuit arrangements supply the auxiliary voltage to a device to be supplied as long as two out of four conductors are intact. From an economic point of view, however, the rectifier sections are relatively complex components.
  • the invention has for its object to develop a circuit arrangement for the safe supply of residual current circuit breakers that work with an auxiliary voltage, which manages with fewer than eight rectifier paths.
  • the current requirement in the auxiliary supply of an electronically operating residual current circuit breaker is usually below 2 mA and the voltage has to be transformed down from the mains voltage values.
  • resistors can be switched on between the rectifier sections and network-side connection points in the outer conductors.
  • An embodiment of the circuit arrangement can contain capacitors for controlling the potential between the neutral conductor and the connection points.
  • a capacitor is switched on between the connection points and at least one resistor between a connection point and the associated output of the circuit arrangement.
  • the capacitor can in particular form a T circuit with two resistors (FIG. 3).
  • the circuit arrangement according to FIG. 1 is connected to four conductors L1, L2, L3 and N to be monitored. It supplies the auxiliary energy for the operation of a residual current circuit breaker.
  • Switch contacts 1 are arranged in the conductors to be monitored, on which a switching lock 2 acts.
  • This switch lock 2 is to be presented housed in a residual current circuit breaker through which the conductors to be monitored are passed and which requires an auxiliary voltage for its operation.
  • the auxiliary voltage is output at the connection points 3 of a bridge circuit 4.
  • the auxiliary voltage works on a consumer 5 to be presented arranged in the residual current circuit breaker.
  • Two rectifier sections 6 and two rectifier sections 7 to two conductors, in the exemplary embodiment the conductors L1 and L2, are arranged in bridge circuit 4.
  • a single rectifier path 8 or 9 of the other conductors in the exemplary embodiment conductor L3 and neutral conductor N is connected to the connection points 3 of the bridge circuit 4.
  • the auxiliary voltage can be tapped at the connection points 3 of the bridge circuit 4.
  • Conventional smoothing agents in the exemplary embodiment a capacitor 10 and a valve 11 operating above a threshold voltage, e.g. B. a zener diode.
  • Series resistors can be arranged on the network side of the circuit arrangement in order to reduce the voltage for the consumer 5. Such series resistors 12 are shown in FIG. 2. In addition, between the neutral conductor N and the connection points 3, capacitors 13 are arranged for controlling the potential of the outputs, one or both of which can be omitted.
  • a capacitor 14 is connected between the connection points 3, and two resistors 15 are arranged between a connection point and the associated output 33 of the circuit arrangement in order to reduce the voltage at the output 33.
  • One the resistors 1 and the capacitor 14 can be omitted for the principle of operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Rectifiers (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Led Device Packages (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Led Devices (AREA)
  • Cable Accessories (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
  • Mechanical Operated Clutches (AREA)
  • Control Of Transmission Device (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

1. Circuit for multiple earth leakage circuit breakers which operate with an auxiliary voltage derived via rectifier sections (6, 7, 8, 9), each two rectifier sections (6, 7) being associated with two mains conductors (from L1, L2, L3, N), comprising the phase conductors (L1, L2, L3) and the neutral conductor (N), in a bridge circuit configuration (4), characterised in that one of a single rectifier section (8, 9) is connected to the junction points (3) of the bridge circuit for each of the remaining mains conductor and that the auxiliary voltage can be tapped off from the said junction points (3) or places (33) disposed downstream thereof.

Description

Die Erfindung bezieht sich auf eine Schaltungsanordnung für mehrpolige Fehlerstromschutzschalter gemäß dem ersten Teil des Anspruches 1.The invention relates to a circuit arrangement for multi-pole residual current circuit breakers according to the first part of claim 1.

Eine bekannte Schaltungsanordnung dieser Art arbeitet mit zwei Gleichrichterstrecken für jeden Netzleiter, so daß insgesamt bei drei Außenleitern - früher als Phasenleiter bezeichnet - und einem Neutralleiter - früher als Mittelpunktleiter bezeichnet - acht Gleichrichterstrecken benötigt werden (DE-B2-2653 453). Die Gleichrichterstrecken sind in Brückenschaltung angeordnet und an ihren Verbindungspunkten läßt sich die Hilfsspannung abgreifen.A known circuit arrangement of this type works with two rectifier sections for each network conductor, so that a total of three outer conductors - formerly referred to as phase conductors - and one neutral conductor - formerly referred to as center conductors - require eight rectifier sections (DE-B2-2653 453). The rectifier sections are arranged in a bridge circuit and the auxiliary voltage can be tapped at their connection points.

Es ist ferner eine Erdleckdetektionsvorrichtung bekannt (DE-A1-28 25 881), wonach Ausführungsbeispielen zufolge in eine Brückenanordnung von Gleichrichterstrecken zusätzlich eine Hilfserde eingekoppelt wird. Diese Hilfserde übernimmt bei einem Nulleiterbruch, wenn über die Last bei einphasigem Betrieb am zweiten Betriebspol ein von Null verschiedenes Potential ansteht, die Funktion des zweiten Betriebspols. Bei mehrphasiger Ausbildung der bekannten Vorrichtung wird eine Schaltung erreicht, die der zuvor geschilderten im wesentlichen entspricht, bei der aber eine zusätzliche Hilfserde, also unabhängig von einem Netz, eingekoppelt wird.An earth leak detection device is also known (DE-A1-28 25 881), according to which, according to exemplary embodiments, an auxiliary earth is additionally coupled into a bridge arrangement of rectifier paths. This auxiliary earth takes over the function of the second operating pole in the event of a neutral conductor break, if a potential other than zero is present across the load in single-phase operation at the second operating pole. With a multi-phase design of the known device, a circuit is achieved which essentially corresponds to that described above, but in which an additional auxiliary earth is coupled in, that is to say independently of a network.

Die bekannten mehrpoligen Schaltungsanordnungen liefern einem zu versorgenden Gerät die Hilfsspannung solange zwei von vier Leitern intakt sind. Die Gleichrichterstrecken sind jedoch, wirtschaftlich gesehen, verhältnismäßig aufwendige Bauteile.The known multi-pole circuit arrangements supply the auxiliary voltage to a device to be supplied as long as two out of four conductors are intact. From an economic point of view, however, the rectifier sections are relatively complex components.

Der Erfindung liegt die Aufgabe zugrunde, eine Schaltungsanordnung zur sicheren Versorgung von Fehlerstromschutzschaltern, die mit einer Hilfsspannung arbeiten, zu entwickeln, die mit weniger als acht Gleichrichterstrecken auskommt.The invention has for its object to develop a circuit arrangement for the safe supply of residual current circuit breakers that work with an auxiliary voltage, which manages with fewer than eight rectifier paths.

Diese Aufgabe wird erfindungsgemäß durch die kumzeichnenden Merkmale des Anspruches 1 gelöst. Mit einer solchen Schaltungsanordnung wird eine Hilfsspannung für einen Fehlerstromschutzschalter auch dann noch sichergestellt, wenn lediglich oder mindestens zwei von vier Leitern noch an Netzspannung liegen.This object is achieved according to the invention by the characterizing features of claim 1. With such a circuit arrangement, an auxiliary voltage for a residual current circuit breaker is still ensured even if only or at least two out of four conductors are still connected to the mains voltage.

Der Strombedarf in der Hilfsversorgung eines elektronisch arbeitenden Fehlerstromschutzschalters liegt in der Regel unterhalb von 2 mA und die Spannung ist von Netzspannungswerten herunterzutransformieren. Hierzu können zwischen den Gleichrichterstrecken und netzseitigen Anschlußstellen bei den Außenleitern Widerstände eingeschaltet sein. Eine Ausgestaltung der Schaltungsanordnung kann dabei zur Steuerung des Potentials zwischen dem Neutralleiter und den Verbindungspunkten Kondensatoren enthalten.The current requirement in the auxiliary supply of an electronically operating residual current circuit breaker is usually below 2 mA and the voltage has to be transformed down from the mains voltage values. For this purpose, resistors can be switched on between the rectifier sections and network-side connection points in the outer conductors. An embodiment of the circuit arrangement can contain capacitors for controlling the potential between the neutral conductor and the connection points.

Nach einer anderen Ausgestaltung wird zwischen den Verbindungspunkten ein Kondensator eingeschaltet und zwischen einem Verbindungspunkt und dem zugeordneten Ausgang der Schaltungsanordnung zumindest ein Widerstand. Der Kondensator kann mit zwei Widerständen insbesondere eine T-Schaltung bilden (Fig. 3).According to another embodiment, a capacitor is switched on between the connection points and at least one resistor between a connection point and the associated output of the circuit arrangement. The capacitor can in particular form a T circuit with two resistors (FIG. 3).

Die Erfindung soll anhand von in der Zeichnung schematisch wiedergegebenen Ausführungsbeispielen näher erläutert werden:

  • In Figur 1 ist das Grundprinzip der Schaltungsanordnung veranschaulicht.
  • In Figur 2 ist eine Ausgestaltung der Schaltungsanordnung nach Figur 1 wiedergegeben.
  • In Figur 3 ist eine andere Ausgestaltung der Schaltungsanordnung nach Figur 1 dargestellt.
The invention will be explained in more detail with reference to exemplary embodiments schematically shown in the drawing:
  • The basic principle of the circuit arrangement is illustrated in FIG.
  • FIG. 2 shows an embodiment of the circuit arrangement according to FIG. 1.
  • FIG. 3 shows another embodiment of the circuit arrangement according to FIG. 1.

Die Schaltungsanordnung nach Figur 1 ist an vier zu überwachenden Leitern L1, L2, L3 und N angeschlossen. Sie liefert die Hilfsenergie für den Betrieb eines Fehlerstromschutzschalters. In den zu überwachenden Leitern sind Schaltkontakte 1 angeordnet, auf die ein Schaltschloß 2 einwirkt. Dieses Schaltschloß 2 ist in einem Fehlerstromschutzschalter untergebracht vorzustellen, durch den die zu überwachenden Leiter hindurchgeführt sind und der für seinen Betrieb eine Hilfsspannung benötigt. Die Hilfsspannung wird an den Verbindungspunkten 3 einer Brückenschaltung 4 abgegeben. Die Hilfsspannung arbeitet auf einen im Fehlerstromschutzschalter angeordnet vorzustellenden Verbraucher 5.The circuit arrangement according to FIG. 1 is connected to four conductors L1, L2, L3 and N to be monitored. It supplies the auxiliary energy for the operation of a residual current circuit breaker. Switch contacts 1 are arranged in the conductors to be monitored, on which a switching lock 2 acts. This switch lock 2 is to be presented housed in a residual current circuit breaker through which the conductors to be monitored are passed and which requires an auxiliary voltage for its operation. The auxiliary voltage is output at the connection points 3 of a bridge circuit 4. The auxiliary voltage works on a consumer 5 to be presented arranged in the residual current circuit breaker.

Zwei Gleichrichterstrecken 6 und zwei Gleichrichterstrecken 7 zu zwei Leitern, im Ausführungsbeispiel die Leiter L1 und L2, sind in Brückenschaltung 4 angeordnet. Mit den Verbindungspunkten 3 der Brückenschaltung 4 ist jeweils eine einzelne Gleichrichterstrecke 8 bzw. 9 der übrigen Leiter im Ausführungsbeispiel Leiter L3 and Neutralleiter N, verbunden. An den Verbindungspunkten 3 der Brückenschaltung 4 ist die Hilfsspannung abgreifbar. Zwischen den Verbindungspunkten können übliche Glättungsmittel, im Ausführungsbeispiel ein Kondensator 10 und ein oberhalb einer Schwellspannung arbeitendes Ventil 11, z. B. eine Zenerdiode, angeordnet sein.Two rectifier sections 6 and two rectifier sections 7 to two conductors, in the exemplary embodiment the conductors L1 and L2, are arranged in bridge circuit 4. A single rectifier path 8 or 9 of the other conductors in the exemplary embodiment conductor L3 and neutral conductor N is connected to the connection points 3 of the bridge circuit 4. The auxiliary voltage can be tapped at the connection points 3 of the bridge circuit 4. Conventional smoothing agents, in the exemplary embodiment a capacitor 10 and a valve 11 operating above a threshold voltage, e.g. B. a zener diode.

Auf der Netzseite der Schaltungsanordnung können Vorwiderstände angeordnet werden, um die Spannung für den Verbraucher 5 herunterzusetzen. Solche Vorwiderstände 12 sind in Figur 2 dargestellt. Außerdem sind zwischen dem Neutralleiter N und den Verbindungspunkten 3 Kondensatoren 13 zur Steuerung des Potentials der Ausgänge angeordnet, von denen einer oder auch beide entfallen können.Series resistors can be arranged on the network side of the circuit arrangement in order to reduce the voltage for the consumer 5. Such series resistors 12 are shown in FIG. 2. In addition, between the neutral conductor N and the connection points 3, capacitors 13 are arranged for controlling the potential of the outputs, one or both of which can be omitted.

In der Schaltungsanordnung nach Figur 3 ist zwischen den Verbindungspunkten 3 ein Kondensator 14 eingeschaltet, und zwischen einem Verbindungspunkt und dem zugeordneten Ausgang 33 der Schaltungsanordnung sind zwei Widerstände 15 angeordnet, um die Spannung am Ausgang 33 herabzusetzen. Einer der Widerstände 1 sowie der Kondensator 14 können für die prinzipielle Arbeitsweise entfallen.In the circuit arrangement according to FIG. 3, a capacitor 14 is connected between the connection points 3, and two resistors 15 are arranged between a connection point and the associated output 33 of the circuit arrangement in order to reduce the voltage at the output 33. One the resistors 1 and the capacitor 14 can be omitted for the principle of operation.

Claims (4)

1. Circuit for multipole earth leakage circuit breakers which operate with an auxiliary voltage derived via rectifier sections (6, 7, 8, 9), each two rectifier sections (6, 7) being associated with two mains conductors (from L1, L2, L3, N), comprising the phase conductors (L1, L2, L3) and the neutral conductor (N), in a bridge circuit configuration (4), characterised in that one of a single rectifier section (8, 9) is connected to the junction points (3) of the bridge circuit for each of the remaining mains conductor and that the auxiliary voltage can be tapped off from the said junction points (3) or places (33) disposed downstream thereof.
2. Circuit according to claim 1, characterised in that the resistors (12) are connected between the rectifier sections (6, 7, 8) and the mains side connecting points of the phase conductors (L1, L1, L3).
3. Circuit according to claim 1 or 2, characterised in that capacitors (13) are disposed between the neutral conductor (N) and the junction points (3).
4. Circuit according to claim 1, characterised in that a capacitor (14) is connected between the junction points (3) and that at least one resistor (15) is disposed between a junction point (3) and the associated output (33) of the circuit.
EP80105299A 1979-09-20 1980-09-04 Circuit arrangement for multiple-pole fault-current protection switches Expired EP0026355B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80105299T ATE7987T1 (en) 1979-09-20 1980-09-04 CIRCUIT ARRANGEMENT FOR MULTI-POLE RESIDUAL CURRENT PROTECTION SWITCHES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2938124 1979-09-20
DE19792938124 DE2938124A1 (en) 1979-09-20 1979-09-20 CIRCUIT ARRANGEMENT, ESPECIALLY FOR MULTIPOLAR FAULT CURRENT CIRCUIT BREAKERS

Publications (2)

Publication Number Publication Date
EP0026355A1 EP0026355A1 (en) 1981-04-08
EP0026355B1 true EP0026355B1 (en) 1984-06-13

Family

ID=6081421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80105299A Expired EP0026355B1 (en) 1979-09-20 1980-09-04 Circuit arrangement for multiple-pole fault-current protection switches

Country Status (8)

Country Link
EP (1) EP0026355B1 (en)
JP (1) JPS5653529A (en)
AT (1) ATE7987T1 (en)
DE (1) DE2938124A1 (en)
DK (1) DK396280A (en)
ES (1) ES495195A0 (en)
GR (1) GR70035B (en)
ZA (1) ZA805831B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4369417B2 (en) * 2005-11-30 2009-11-18 三菱電機株式会社 Earth leakage breaker

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2653453C3 (en) * 1976-11-25 1986-10-02 Felten & Guilleaume Energietechnik GmbH, 5000 Köln Circuit arrangement for an auxiliary voltage derived from the mains voltage via rectifier elements for multi-pole residual current circuit breakers
NL176508C (en) * 1977-06-14 1985-04-16 Hazemeijer Bv NUTRITION EQUIPMENT FOR A PROTECTION DEVICE, SUCH AS AN EARTH DETECTION DEVICE, AND PROTECTION EQUIPMENT EQUIPPED WITH SUCH A NUTRITION EQUIPMENT.

Also Published As

Publication number Publication date
GR70035B (en) 1982-07-26
EP0026355A1 (en) 1981-04-08
ZA805831B (en) 1981-09-30
DE2938124A1 (en) 1981-04-09
JPS5653529A (en) 1981-05-13
DE2938124C2 (en) 1987-12-23
DK396280A (en) 1981-03-21
ES8105524A1 (en) 1981-06-01
ATE7987T1 (en) 1984-06-15
JPS6311846B2 (en) 1988-03-16
ES495195A0 (en) 1981-06-01

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